1210121022101 has 8 divisors (see below), whose sum is σ = 1212139877784. Its totient is φ = 1208102353920.

The previous prime is 1210121022091. The next prime is 1210121022139. The reversal of 1210121022101 is 1012201210121.

It can be written as a sum of positive squares in 4 ways, for example, as 124619590225 + 1085501431876 = 353015^2 + 1041874^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1210121022101 - 2¹⁰ = 1210121021077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210121022181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19820261 + ... + 19881221.

It is an arithmetic number, because the mean of its divisors is an integer number (151517484723).

Almost surely, 2^{1210121022101} is an apocalyptic number.

It is an amenable number.

1210121022101 is a deficient number, since it is larger than the sum of its proper divisors (2018855683).

1210121022101 is an equidigital number, since it uses as much as digits as its factorization.

1210121022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93751.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1210121022101 its reverse (1012201210121), we get a palindrome (2222322232222).

The spelling of 1210121022101 in words is "one trillion, two hundred ten billion, one hundred twenty-one million, twenty-two thousand, one hundred one".